Medium severity5.5NVD Advisory· Published Oct 12, 2026· Updated Oct 12, 2026

CVE-2026-109374

Description

ZITADEL 3.0.0 before 4.19.2 contains a privilege escalation vulnerability in OIDC token exchange that allows end-user impersonators to impersonate administrators including IAM_OWNER by bypassing the admin.impersonation check. Attackers holding IAM_END_USER_IMPERSONATOR or ORG_END_USER_IMPERSONATOR roles can sign in to relying applications as administrators with their roles and claims.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Zitadel/Zitadelllm-fuzzy
Range: <4.19.2

Patches

Vulnerability mechanics

References

github.com/zitadel/zitadel/security/advisories/GHSA-w4gv-rcwj-w6r5nvd
www.vulncheck.com/advisories/zitadel-3.0.0-before-4.19.2-privilege-escalation-via-oidc-token-exchange-impersonationnvd

News mentions

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cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000